import java.util.Scanner
import scala.collection.mutable.ArrayBuffer

object Main extends App {
  val sc = new Scanner(System.in)

  val n = sc.nextInt
  val al = ArrayBuffer.fill(n)(sc.nextInt)
  val bl = ArrayBuffer.fill(n)(sc.nextInt)
  var ans = 0
  var cnt = 0
  var f = al(0) != bl(0)
  while(cnt < n) {
    val c = al(cnt) != bl(cnt)
    if(c) {
      if(f) {
        ans += 1
        f = false
      }
    } else {
      f = true
    }
    cnt += 1
  }
  println(ans)
}